But I recommend you to buy an Case to transform your HDD in an external HDD because it needs power suply and this cable don't do this

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A case would be much better. Less chance of HDD fail because less dust will affect the HDD.

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Exactly
and without a Case if your HDD fall it will suffer less damage...

The only problem I've seen but I think the problem is my case is the transfer rate, using it to store videos and see it in WiiMC sometimes cause bufferings
But emulated games(even PSx games) works normal